Useful links:
12/02/2923
TO-DO: finalize lights wiring (gauges + lengths)
22 AWG for all LV systems!!!!
could also use 18 if 22 is too sus…
crimps for 22 AWG available!
to-do: make calculator for wire length, current in - power loss out
make table for harnessing wire lengths
3 solar relays
to begin wiring things beginning of next term
DEADLINE: beginning of next term
Short term items:
clean up mockup spreadsheet
do battery box enclosures
solar harnessing ideas
PD Outputs
11/25/2023
All possible board mounting locations
entire roof panel available
chassis nose
59cm L x 47 cm W
AVOID THE MIDDLE (steering column)
aero nose
also avoid middle! (rib)
Lights
6 turn signal lights (yellow)
3 in parallel (for either side)
3 brake lights (red)
all in parallel
2 headlights(white)
parallel
1 bps fault ubducator (white)
LOCKED ELECTRICAL SYSTEM CENTRAL LOCATION
table for mockup!
11/21/2023
AFE voltage taps
need fuse so it doesn’t go > 10 mA
instead use super thin gauge wire
could be harnessing task…
PD size
10 x 13 (14?) cm
confirmed its 10 x 14 cm
use 22 gauge wire where possible
for HV DCDC-in, maybe 14?
for HV solar, around 10-12 awg (the max you can to reduce resistance)
for HV motor & pack, use ~4 gauge wire in bay
TO-DO: figure out daisy chain controller board
ideally one terminating resistor pair in enclosure
only two CAN wires coming out instead of 4 otherwise
Wire Gauge Speccing
Working session this Saturday!
Tasks:
Aden - PD
Owen - Battery Enclosure
Yanshen + Jason - Driver Controls
CRITICAL:
mechanical locations of boards!!!
roughly every possible place to put boards
IN-PERSON WORKING SESSION Saturday, Nov. 25th - 1:00 PM
Proposed Path (PD-CC-Steering):
can’t be over battery box because they remove from the top
can’t be on side flange since it’s difficult to get to - Michael
figure out area size needed, then reach out to Michael Hanley to figure out proper area for PD
Battery Enclosure Circuits
LV:
Pin | Type | Name | Average Current | Peak Current (500ms) |
|---|---|---|---|---|
1 | OUT | DCDC + | 2 | 4 |
2 | OUT | GND | 2 | 4 |
3 | OUT | AUX + | 2 | 4 |
4 | IN | BMS DCDC + | 0.5 | 3 |
5 | IN | BMS AUX + | 0.5 | 3 |
6 | - | BMS CANH | 0 | 0 |
7 | - | BMS CANL | 0 | 0 |
8 | IN | Kill Switch IN | 0 | 0 |
9 | OUT | Kill Switch OUT | 0 | 0 |
10 | IN | MCI | 0.8 | 3 |
11 | - | Motor CANH | 0 | |
12 | - | Motor CANL | 0 |
HV:
Pin | Name | Average Current | Peak Current (5min) |
|---|---|---|---|
1 | Motor + | 8 | 58 |
2 | Motor - | 8 | 58 |
3 | Solar + | 8 | 8 |
4 | Solar - | 8 | 8 |
8/27/2023
created + cleaned up MSXV Electrical Mockup Connections google sheet
Hardware Board Enclosures review
harnessing sheaths
combine common wires (i.e. GND) and splice them OR keep each wire separate but in common “casings”
FRONT ENCLOSURE TO REAR/BATTERY/CANOPY
run from sides following chassis tubes
REAR/BATTERY TO CANOPY
wiring needs to not restrict opening of canopy
Proposed path: Rear → Front → Rear (on side of canopy) → canopy
REAR/BATTERY TO TAIL
most direct path
UPDATE 28/08/2023: battery box ports will likely be on top of the front of our enclosure and maybe one or so on the lid for the AFEs
TO-DO:
work on PD/BMS portion of MSXV Elec Connections Google Sheet
remember to spec out wire gauges + length estimations!
7/26/2023
looking into harnessing softwares
Siemens
Solidworks Electrical
Solidworks Mechanical (extruded-circle for wire)
possibly no wiring CAD
mock-up diagram finalization
Forest Zhou for update
MSXIV Excel Wiring Tracker
Wiring speccing
look into MSXIV Electrical VDR
Task Delegation
break down by HV, LV; between enclosures
new-member friendly: speccing components (connectors, wires)
digikey skills, decision matrices, etc.
Reference Vehicle Assembly Photos
